1. Asmar, N.H.: Partial Differential Equations with Fourier Series and Boundary Value Problems. Pearson Prentice Hall, New Jersey (2005)
2. Bonami A., Demange B., Jaming P.: Hermite functions and uncertainty principles for the Fourier transform and the windowed Fourier transform. Rev. Mat. Iberoamericana. 19(1), 23–55 (2003)
3. Bayro-Corrochano E.: The theory and use of the quaternion wavelet transform. J. Math. Imaging Vis. 26(1), 5–18 (2006)
4. Bülow, T.: Hypercomplex Spectral Signal Representations for the Processing and Analysis of Images. Ph.D. thesis, University of Kiel, Germany (1999)
5. Bahri M., Hitzer E., Hayashi A., Ashino R.: An uncertainty principle for quaternion Fourier transform. Comput. Math. Appl. 56(9), 2411–2417 (2008)